Let's talk aseasonal fashion: things that are OK to wear all year long because they don't fulfill a particular seasonal function or fit into a seasonal mold. Christmas tree sweaters and American flag prints are obviously seasonal.

White is aseasonal. Yes, I said aseasonal. Contrary to popular (old-school) belief, it's perfectly acceptable to wear white after Labor Day. Wear white whenever the heck you want, I say.

Next: pattern. Patterened pieces are a safe year-round choice, and pattern mixing is a hot trend right now, but it's one that can be tricky to navigate. Fashion Master Tim Gunn has some great tips in this edition of Gunn Laws, and if you've watched an episode of Project Runway within the last two years, you've probably noticed that he's confident mixing a pattern or three.

Just remember that when it comes to pattern mixing (and fashion in general), there are no rules. And even if there were, as Mr. Gunn says, "Rules are meant to be broken, provided we're thoughtful about how we break them."